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Business Acquisition (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Apr. 02, 2018	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Net cash consideration			$ 0	$ 5,794
Huntington Steele, LLC
Business Acquisition [Line Items]
Total purchase price	$ 17,914
Net cash consideration	5,794
Cash acquired from acquisition	125
Contingent purchase price	$ 12,120
Payment for contingent purchase price		$ 433
Accrued liabilities | Huntington Steele, LLC
Business Acquisition [Line Items]
Contingent purchase price, current		535	535
Other long-term liabilities | Huntington Steele, LLC
Business Acquisition [Line Items]
Contingent purchase price, noncurrent		$ 11,152	$ 11,152

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability, Current

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability, Noncurrent

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability exceeding amount recognized at acquisition date. Includes, but is not limited to, measurement period adjustment and less amount paid soon after acquisition date.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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